Legal Working Hours Per Week: Employer’s Guide to Compliance in Australia

If you’re running a team in Australia, getting working hours right is more than just a payroll issue. It’s central to Fair Work compliance, staff wellbeing, and your ability to run a productive, resilient business.

The good news? Once you understand the rules around ordinary hours, “reasonable additional hours”, overtime, breaks and rostering, you can set up simple systems that keep you compliant and your people happy.

In this guide, we’ll walk through the legal baseline for weekly hours, how Awards and enterprise agreements interact with the National Employment Standards (NES), what counts as reasonable, and the practical steps to manage rosters, overtime and record‑keeping with confidence.

What Is the Legal Standard for Weekly Working Hours in Australia?

Under the National Employment Standards in the Fair Work Act 2009 (Cth), the maximum weekly hours are:

• 38 hours for a full‑time employee; and
• for other employees, the lesser of 38 hours or their ordinary hours in a week.

On top of those maximums, you may request reasonable additional hours. That’s the legal frame: 38 hours (or ordinary hours for part‑timers) plus only what’s reasonable in the circumstances. There isn’t a separate unlimited cap beyond “reasonable”.

What Makes Additional Hours “Reasonable”?

Reasonableness depends on a range of factors, including (non‑exhaustive):

• Any risk to employee health and safety (for example, fatigue or long stretches without adequate rest).
• The employee’s personal circumstances (such as family or caring responsibilities).
• The needs of the workplace and the nature of the role.
• Whether additional hours are provided for in a Modern Award, enterprise agreement or the employment contract.
• Whether you gave adequate notice of the additional hours.
• Whether the employee is entitled to overtime, penalty rates or time off in lieu for those extra hours.

Reasonable additional hours do not give you a licence to roster long weeks as the norm. They’re intended for peaks and business needs that arise within a safe and lawful framework. If you’re also thinking about day‑to‑day limits, it’s worth comparing your roster model against the legal maximum working hours per day guidance.

How Do Awards, Enterprise Agreements and Contracts Affect Weekly Hours?

The NES sets the floor. Your industry’s Modern Award, any registered enterprise agreement, and each employee’s contract then fill in the detail about ordinary hours, span of hours, overtime triggers, penalties and breaks.

• Modern Awards define ordinary hours (for example, 38 per week), the span (times of day) they can be worked, and when overtime applies. They also set penalty rates for evenings, weekends and public holidays, and minimum break entitlements.
• Enterprise Agreements (EBAs) can tailor hours and rostering to your workplace, but cannot undercut the NES. They usually specify overtime thresholds and compensation.
• Employment Contracts should clearly state the ordinary hours, roster/availability expectations, overtime approval process and how additional hours are compensated. A contract can’t override the NES or an applicable Award/EBA to provide less than the minimum.

If you use annualised salary arrangements, make sure you follow any Award rules for annualised wages (for example, record‑keeping, “outer limits” for overtime, reconciliation requirements and written notifications). For most workforces, it’s wise to embed the ordinary hours and overtime rules in a clear Employment Contract.

Ordinary Hours, Overtime, Penalties and Breaks: What Do You Need To Pay?

To stay compliant and keep rosters fair, focus on four pillars: ordinary hours, when overtime is triggered, penalty rates, and breaks (during and between shifts).

Ordinary Hours and Overtime

• Ordinary hours are the hours worked within the Award or agreement’s ordinary span (often averaging 38 per week for full‑timers). Work outside those parameters typically becomes overtime.
• Overtime is usually payable at higher rates when hours exceed ordinary hours, exceed daily limits, occur outside the span of hours, or when part‑timers work beyond their agreed pattern.
• Where available under your Award or agreement, you may agree with an employee to take time off in lieu instead of paid overtime, provided the rules are followed and the employee is not worse off. For practical context, see how overtime laws apply across different roles.

Penalty Rates

Many Awards set higher rates for evenings, weekends and public holidays. These are different from overtime and can apply even when hours are within the weekly ordinary hours, depending on the span. Cross‑check your Award so your rostered hours are costed accurately.

Breaks During Shifts and Rest Between Shifts

• Most Awards require meal breaks on longer shifts and sometimes paid rest pauses.
• Many Awards also mandate a minimum break between shifts to manage fatigue (for example, 10 or 12 hours off before the next shift). As a starting point, compare your schedules with the practical guidance on Fair Work breaks and the minimum break between shifts requirements commonly found in Awards.

Build these settings into your rostering system so overtime approvals, penalty triggers and break compliance happen by default rather than after the fact.

Managing Rosters, “Reasonable Additional Hours” and Flexibility

Your roster is where the law meets day‑to‑day operations. A thoughtful approach protects productivity and reduces dispute risk.

Part‑Time and Casual Hours

• Part‑time employees work regular hours less than 38 per week. Hours should be agreed in writing. Extra hours beyond the agreed pattern often attract overtime under the Award.
• Casual employees have no guaranteed hours and receive a casual loading in lieu of certain entitlements, but Award rules around minimum engagement periods, penalty rates and maximum daily hours still apply.

Averaging Ordinary Hours

Many Awards allow averaging (for example, 152 hours over four weeks instead of an exact 38 every week). Averaging must follow Award or agreement rules, including any daily limits and break requirements, and it must not leave employees worse off.

Changing Rosters and Notice

If you need to change rosters or shift times, check the Award or agreement’s consultation and notice requirements before you implement changes. As a practical starting point, compare your process to the guidance on changing employee rosters.

When Additional Hours Stop Being Reasonable

Additional hours cross the line when they compromise safety or disregard personal circumstances, are demanded at short notice without proper compensation, or become routine rather than occasional. If extra hours are a business norm, you may need more staff, a different roster model, or an annualised arrangement that genuinely covers expected overtime (and still complies with Award rules).

Record‑Keeping, Policies and WHS: Staying On The Right Side Of The Law

Compliance isn’t just about paying correctly - it’s also about keeping the right records and managing fatigue and safety.

What Records Do You Need to Keep?

Under the Fair Work Regulations, you must keep time and wages records that are accurate and readily accessible. In practice:

• Keep records of hours for employees who are entitled to overtime/penalties or who work irregular or occasional hours where payment depends on the time worked.
• If you use annualised salary arrangements under an Award, keep any required start/finish times and breaks, written notifications, outer limits and reconciliation records.
• For salaried staff who are not covered by an Award/EA overtime scheme and whose pay doesn’t depend on time worked, you may not need to track every hour - but you still must maintain wage, leave and employment records, and demonstrate compliance if audited.

A simple digital system that captures rostered versus worked time, approvals for overtime and breaks taken will go a long way if the Fair Work Ombudsman asks questions later.

Work Health and Safety (WHS) and Fatigue

You have a duty to provide a safe workplace. That includes designing rosters that manage fatigue risk (for example, avoiding double shifts without adequate rest between, or long stretches of night work without rotation). If your work is physically or mentally demanding, consider even more conservative limits than the Award minimums.

Policies and Contracts

Clear paperwork sets expectations and reduces the chance of disputes about hours and availability. At a minimum, make sure you have:

• An Employment Contract that states ordinary hours, rostering expectations, whether and how overtime is approved, and how additional hours are compensated (overtime, penalties or time off in lieu).
• A Workplace Policy or staff handbook covering rostering, breaks, fatigue management, flexible work requests, and procedures for raising concerns about hours.

Consistency is key - your contracts, policies, rosters and payroll should all reflect the same rules.

Practical Tips and Common Pitfalls For Employers

Here are practical ways to keep weekly hours lawful and your team engaged.

Set Up Your Systems

• Embed Award rules into your rostering tool. Configure daily limits, break prompts, penalty periods and overtime alerts so you catch problems before they happen.
• Use an approval workflow for additional hours. Require manager sign‑off for overtime and time off in lieu before hours are worked, not afterwards.
• Schedule with rest in mind. Prioritise minimum breaks between shifts and plan ahead for known peaks (seasonal trading, events) to avoid last‑minute overtime.

Pay Correctly - Salary Isn’t a Get‑Out‑Of‑Overtime Card

Don’t assume a salary “includes all” unless you’ve structured it lawfully and it actually compensates for expected overtime. If you’re relying on an annualised salary under an Award, follow the Award’s strict requirements (outer limits, record‑keeping and reconciliations). If in doubt, pay the Award overtime or offer compliant time off in lieu. For a broader perspective on costs and triggers, revisit how Australian overtime laws operate in practice.

Consult Before You Change Hours

Most Awards require consultation if you change regular rosters or hours. Build consultation into your timeline and document the steps you take.

Watch for Hidden Working Time

Work performed before a shift, after closing, or at home can still count as time worked. Make it clear when employees are “on” and require pre‑approval for extra tasks outside rostered hours.

Keep the Conversation Open

Encourage employees to raise fatigue or availability concerns early. A culture of early conversations often prevents WHS issues and underpayment claims down the track.

Know Your Benchmarks

Keep a simple checklist near your rostering desk: weekly maximums, daily limits, break rules and penalty windows. If you need a refresher, compare your settings against the general guidance on maximum hours of work per week and align with your specific Award requirements.

Plan For Flexibility, Not Chaos

Flexible work is a great retention tool, but it still needs clear rules. If you’re introducing flexible start/finish times, compressed weeks or hybrid work, set eligibility criteria, communication norms and approval processes. As your approach matures, you’ll likely update your roster model too - here, the practical steps in changing rosters can help you structure the change properly.

FAQs: Weekly Hours, Overtime and Breaks

Can I Require Someone To Work More Than 38–40 Hours in a Week?

You can request reasonable additional hours in line with the NES, the applicable Award or agreement, and the person’s contract. Once hours stop being reasonable (for example, because of fatigue or personal circumstances) or once you fail to compensate them correctly, you risk breaching the law.

How Do Overtime and Penalties Interact?

They’re separate concepts. Overtime usually kicks in when hours exceed ordinary hours or are outside the span. Penalties compensate for working at less desirable times (evenings, weekends, public holidays). In some scenarios both can apply - always check your Award. If you’re weighing alternatives like time off in lieu versus paying overtime, make sure any arrangement leaves the employee better off overall and is documented.

What Are the Rules on Breaks?

Awards set minimum meal breaks during shifts and minimum rest between shifts. Build break compliance into your roster and timekeeping. If you’re designing new roster patterns, it’s useful to compare your approach to the general settings in Fair Work breaks and your Award’s specific clauses.

Do I Have To Record Every Employee’s Hours?

You must keep time and wage records as required by the Fair Work Regulations. In practice, you need accurate records for employees whose pay depends on hours worked (including overtime and penalties), and for employees on Award annualised salary arrangements (with start/finish and break records as required). For salaried staff whose pay does not depend on hours and who aren’t covered by Award overtime provisions, you still need comprehensive employment and wage records, but not necessarily a minute‑by‑minute timesheet. When in doubt, record more rather than less.

How Do Weekly Rules Fit With Daily Limits?

Weekly maximums work alongside daily limits and break requirements. Even if you’re within 38 hours for the week, a day that breaches the Award’s daily cap or minimum break rules can still be non‑compliant. Sense‑check both your weekly totals and your daily patterns, using the overview of maximum hours per day as a baseline and your Award for specifics.

Key Takeaways

• The legal maximum is 38 hours per week for full‑time staff (or the employee’s ordinary hours) plus only reasonable additional hours - there isn’t an open‑ended cap beyond reasonableness.
• Modern Awards and enterprise agreements define the details: ordinary hours, span, overtime triggers, penalty rates and break rules. Your contracts and rosters should match.
• Pay overtime and penalties correctly, or agree on compliant time off in lieu where allowed. Salary is not a shortcut unless structured lawfully and reconciled as required.
• Record hours where payment depends on time worked and for any Award annualised salary arrangements, and keep robust wage and employment records for everyone.
• Design rosters that manage fatigue and safety, consult before changing hours, and bake Award rules into your systems to prevent errors.
• Clear documents help: pair a tailored Employment Contract with a practical Workplace Policy so expectations are clear and consistently applied.

If you’d like a consultation on working hours compliance or help updating your contracts, rosters and policies, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no‑obligations chat.